Nitrogen Combustion

The new Gerhardt DUMATHERM comprises all advantages of the Dumas combustion method: It is fast, precise, and cost efficient!

DUMATHERM is setting a new dimension in nitrogen determination according to the dumas method. It observes all international norms and analysis standards, eg. AOAC, AOCS, ASBC, AACC, ASTM, DIN etc.

The combustion method was originally created in 1848 by Dumas. In the Dumas method, a sample is burned in an oxygen rich atmosphere at high temperatures and the resulting gases are analyzed. Now, C. Gerhardt, being the market leaders for Kjeldahl analysis, is offering the highly efficient DUMATHERM. By using the Dumas method, the new technique offers a fast and comfortable alternative to classical systems.

Quick Combustion/Determination Time

The clever design of the DUMATHERM’s furnace chamber in combination with the direct analysis of all resulting gases provides the user with results in 2-3 minutes. Thanks to the construction of the instrument, the DUMATHERM has hardly any wear and tear parts, which reduces costs for service. The Dumas method serves as a more precise and efficient alternative to Kjeldahl. In the food market total Kjeldahl nitrogen methodology is used for protein determination. Digestion, distillation and titration can take up to 1.5 to 2 hours. With Dumatherm, protein analysis time can be reduced to 2.5 minutes. This translates into a 98% time savings as compared to Kjeldahl. Precision is also increased.

An internationally recognized alternative to Total Kjeldahl Nitrogen. Solid or liquid samples are combusted at high temperatures in the presence of catalysts into oxides. With the help of copper, the resulting nitrogen oxides (NOx) are reduced to elemental nitrogen while the by-products, water and carbon dioxide are separated completely. The remaining nitrogen is analyzed using a single filament detector.

No requirement for sample preparation with aggressive chemicals. DUMATHERM is entirely controlled by PC and the user-friendly control software, DUMATHERM MANAGER. Since the software controls the entire analysis, the amount of time that the user has to actually spend in front of the instrument is reduced to a minimum. Furthermore, the software includes very powerful diagnosis and documentation functions.

Protein in Foods, Nitrogen in Fertilizers, Elemental Nitrogen. DUMATHERM observes international norms and analysis standards, like e.g. AOAC, AOCS, ASBC, AACC, ASTM, §35 LMBG, DIN, etc. and thus, meets the requested analysis qualities. DUMATHERM can be used for all analytical areas. Application notes for various determinations are available on request.

Contact us to learn more about how the Dumatherm combustion nitrogen analyzer works or to arrange for a product demonstration.